SN54HCT157 Datasheet, PDF (1/6 Pages) Texas Instruments – QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS

SN54HCT157, SN74HCT157
QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
D Inputs Are TTL-Voltage Compatible
D Buffered Inputs and Outputs
D Package Options Include Plastic
Small-Outline (D) and Ceramic Flat (W)
Packages, Ceramic Chip Carriers (FK), and
Standard Plastic (N) and Ceramic (J)
300-mil DIPs
description
These monolithic data selectors/multiplexers
contain inverters and drivers to supply full data
selection to the four output gates. A separate
strobe (G) input is provided. A 4-bit word is
selected from one of two sources and is routed to
the four outputs.
The SN54HCT157 is characterized for operation
over the full military temperature range of –55°C
to 125°C. The SN74HCT157 is characterized for
operation from –40°C to 85°C.
STROBE
G
H
L
L
L
L
FUNCTION TABLE
INPUTS
SELECT
A/B
DATA
A
B
X
X
X
L
L
X
L
H
X
H
X
L
H
X
H
OUTPUT
Y
L
L
H
L
H
SCLS071B – NOVEMBER 1988 – REVISED MAY 1997
SN54HCT157 . . . J OR W PACKAGE
SN74HCT157 . . . D OR N PACKAGE
(TOP VIEW)
A/B ₁
1A 2
1B 3
1Y 4
2A 5
2B 6
2Y 7
GND 8
16 ^V_CC
15 G
14 4A
13 4B
12 4Y
11 3A
10 3B
9 3Y
SN54HCT157 . . . FK PACKAGE
(TOP VIEW)
1B
3 2 1 20 19
4
18
4A
1Y 5
17 4B
NC 6
16 NC
2A 7
15 4Y
2B 8
14 3A
9 10 11 12 13
NC – No internal connection
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS OTHERWISE NOTED this document contains PRODUCTION
DATA information current as of publication date. Products conform to
specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all
parameters.
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